package com.tedu.day02.oop;

/**
 * instanceof 关键字---继承---多态---判断类型是否造型了
 */
class Name{}
class ReName extends Name{}
public class Instanceof关键字 {
    public static void main(String[] args) {
        Name name=new Name();
        System.out.println(name instanceof Name); //ture
        System.out.println(name instanceof ReName); //false


        //继承--创建出来---关系---向上造型
        Name a=new ReName();
        System.out.println(a instanceof Name);
        System.out.println(a instanceof ReName);
    }
}
